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how to check array is null or not in typescript?

Infinitbility
TypeScript
September 4th, 2022 · 1 min read

Hi Friends 👋,

Welcome To Infinitbility! ❤️

To check array is null or not in typeScript, use if...else statement it will handle all falsy value like undefined, null, empty and etc.

Let’s see short example to use if...else with array to check a array is null in typeScript.

1if(array && array.length){
2
3}

Today, I’m going to show you How do I check array is null or not in typeScript, as above mentioned, I’m going to use the above-mentioned if...else statement.

Let’s start today’s tutorial how do you check array is null or not in typeScript?

TypeScript check array is null or not example

Here, we will take string variable with some data and use if...else statement to check array is null or not.

1let arr: any = [];
2
3if(arr && arr.length){
4 console.log("arr is have data")
5} else {
6 console.log("arr is havn't data")
7}
8
9let arr1: any = null;
10
11if(arr1 && arr1.length){
12 console.log("arr1 is have data")
13} else {
14 console.log("arr1 is havn't data")
15}

I hope it helps you, All the best 👍.

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